6161764878 has 16 divisors (see below), whose sum is σ = 13692810960. Its totient is φ = 2053921608.

The previous prime is 6161764867. The next prime is 6161764913. The reversal of 6161764878 is 8784671616.

6161764878 is a `hidden beast` number, since 616 + 17 + 6 + 4 + 8 + 7 + 8 = 666.

It is a super-3 number, since 3×6161764878³ (a number of 30 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 114106757 = 6161764878 / (6 + 1 + 6 + 1 + 7 + 6 + 4 + 8 + 7 + 8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57053325 + ... + 57053432.

It is an arithmetic number, because the mean of its divisors is an integer number (855800685).

Almost surely, 2^6161764878 is an apocalyptic number.

6161764878 is an abundant number, since it is smaller than the sum of its proper divisors (7531046082).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6161764878 is a wasteful number, since it uses less digits than its factorization.

6161764878 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114106768 (or 114106762 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 54.

The square root of 6161764878 is about 78496.9099901391. The cubic root of 6161764878 is about 1833.3063419571.

The spelling of 6161764878 in words is "six billion, one hundred sixty-one million, seven hundred sixty-four thousand, eight hundred seventy-eight".